FOLAI TH550 Stud Finder 3in Depth
Product description
This 5‑in‑1 stud scanner helps locate hidden timber joists, metal studs, pipes and live wires for safe wall work. It suits quick pre‑drilling checks and DIY repairs, offering an ergonomic grip and a clear display for steady scanning.
Quick overview

The FOLAI TH550 is a compact wall scanner with multiple detection modes for domestic and light professional use. It detects wooden beams and joists, metal pipes and live AC wiring, and shows depth and signal strength on an upgraded LCD. Auto‑calibration starts after holding the scan button for a second or two, which simplifies setup and reduces false positives. 🛠️


Technical details

- Name: FOLAI TH550 Stud Finder
- Type: 5 in 1 stud detector
- Capacity: Depth detection up to 3 inches
- Power: Requires 9V battery
- Format: LCD display with signal strength and battery indicator
Why it’s worth it



A large graphic LCD and loud audible alert make it easier to pinpoint targets, reducing guesswork. The device offers a distinct bolt mode for timber and a metal mode able to sense deeper pipes, according to the manufacturer. It is lightweight and ergonomically shaped for steady one‑hand use, which helps on ladders and awkward angles.
Everyday use

Place the scanner flat against the wall and move slowly while watching the display and listening for beeps. The unit flags low battery so you can replace the 9V cell before a job is interrupted. For best results start with auto‑calibration, then switch modes depending on whether you expect wood, metal or live wiring. ⚠️
What stands out
The TH550 combines several useful detection modes in a single handheld tool, making it a practical option for homeowners tackling renovation tasks and tradespeople needing a lightweight scanner. Note that detection ranges are manufacturer statements and can vary with wall material and mounting depth.
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